Artificial stone.



water.

UNITED STATES Cross Reference Patented October 4, 1904a PATENT. OFFICE.

ARTIFICIAL STONE.

SPECIFICATION forming part of Letter! Patent No. 771,479, dated October4, 1904. Application flied June 20, 1904. Serial No. 218,484- ClolpooimmJ To all whom it may concern:

Be it known that I, JOHN W. Lnwrs,acitizen of the United States,residing at Bokoshe, in the Choctaw N ation,Indian Territory, haveinvented certain new and useful Improvements in Artificial Stone; and Ido declare the following to be a full, clear, and exact description ofthe invention,such as will enable others skilled in the art to which itappertains to make and use the same. i

This invention relates to a new and useful composition adapted to beutilized as an artificial stone; and it consists in the provision ofvarious ingredients which when compounded in the proportions to behereinafter fully described will produce a marble-like material havinggreat durability and impervious to In carrying out my invention Iutilize Portland cement, salt, sand, alum, rice-water, plaster-ofaris,Spanish whiting, acacia, '(gumarabic, boiled linseed-oil, and Prussianblue, and in making the composition the ingredients are used in thefollowing proportions: -To

thirty-five pounds of Portland cement is added forty-three pounds ofcommon sand to which is added two pounds of common s It, which is addedfor the purpose of preventlng the herdening of the mixture at too earlya period,

and to this mixture four pounds of alum are thoroughly mixed with threepounds of ricewater, whereby a beautifying marble-like appearance may beafforded. The rice-water used is prepared by boiling the rice in theproportion of four pounds of the same to four gallons of water until therice is thoroughly cooked, after which the water is strained and readyfor use. To the mixture is added five pounds of plaster-of-paris, withwhich two pounds of o i l are mix toge pound of Prussian blue. Theplaster-of-paris gives the material a suliicient hardness, while theacacia and linseed-oil toughen the material and make it when dryimpervious to water, and the Prussian blue is simply added as a pigmentfor giving ,the composition a semblance to blue marble, although anyother coloring-matter may be added to the compound for giving imitationsof various colors of stones.

I have found from experiment that by the compounding of the variousingredients described and in the proportions set forth I am able toproduce a material which will be du-' rable, tough, and which willclosely resemble marbles or stones of various kinds and which will beimpervious to water.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

An artificial stone comprising the following ingredients in .theproportions given, thirtyfive pounds of Portland cement, forty-threepounds of common sand, two pounds of salt, four pounds of alum, threepounds of ricewater, five pounds of plasterof-paris, two pounds ofSpanish whiting, two pounds of acacia, two pounds of boiled linseed-oil,and

a quarter of a pound of Prussian blue, com-' J. O. BUFFINGTON.

EXAMINER er with a quarlEr of a

